[GHC] #788: Implement class aliases and/or constraint synonyms

[GHC]

#788: Implement class aliases and/or constraint synonyms
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  Reporter:  simonpj       |           Type:  feature request        
    Status:  new           |       Priority:  normal                 
 Milestone:  _|_           |      Component:  Compiler (Type checker)
   Version:                |       Keywords:                         
  Testcase:  N/A           |      Blockedby:                         
Difficulty:  Unknown       |             Os:  Unknown/Multiple       
  Blocking:                |   Architecture:  Unknown/Multiple       
   Failure:  None/Unknown  |  
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Comment(by batterseapower):

 I see that superclass defaulting has its own ticket: #2895

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/788#comment:12>
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